LOS ANGELES – Two major advocacy groups for the homeless on Tuesday ranked Los Angeles as the “meanest” city in the United States, citing a Skid Row police crackdown they say has criminalized poverty and homelessness there.

L.A.’s so-called Safer City Initiative was singled out in the groups’ report as the most egregious example of policies and practices nationwide that essentially punish people for failing to have a roof over their heads.

Others include making it illegal to sleep, sit or store personal belongings on sidewalks and other public spaces; prohibitions against panhandling or begging; and selective enforcement of petty offenses like jaywalking and loitering.

Such measures are widespread in the face of a deep economic recession and foreclosure crisis that have increased homelessness over the past two years, according to the National Law Center on Homelessness & Poverty and the National Coalition for the Homeless.

Their report examined laws and practices in 273 cities across the country, with Los Angeles topping the list of the 10 “meanest cities” for what the study called inhumane treatment of homeless. A previous report, issued in early 2006 before the crackdown began, ranked L.A. as the 18th meanest.

According to “Homes Not Handcuffs: The Criminalization of Homelessness in U.S. Cities,” the 10 Meanest Cities in 2009 are:

Under the Safer City effort, thousands of L.A.’s most destitute residents have been targeted for harsh police enforcement, routinely receiving tickets for minor infractions such as the failure to obey crossing signals.

As a result, the study says, many are jailed and end up with a criminal record that makes it more difficult for them to find a job or gain access to housing.

A spokesman for Mayor Antonio Villaraigosa issued a statement dismissing the report as “short-sighted and misleading.”

Los Angeles officials have touted their Safer City effort for sharply curbing serious crime in Skid Row, a 50-block downtown area inhabited by the biggest concentration of homeless people in the country. “The city’s first priority is to protect our most vulnerable residents from violent crime,” the mayor’s statement said.

But homeless advocates say a promised strategy to ease homelessness there, including new housing and services to go with the Skid Row cleanup, have largely failed to materialize.

An estimated 40,000 people live on the streets, in abandoned buildings or in temporary shelters throughout Los Angeles, more than 5,000 of them in Skid Row. Another 8,000 make their home in that area’s short-term residential hotels, or flop houses as they were once called.

Becky Dennison, co-director of the Los Angeles Community Action Network, said the homeless population in Los Angeles has ballooned due to a lack of affordable housing, a high poverty rate and “long-standing lack of local resources.”

Tuesday’s report cited a 2007 University of California study that found L.A. was spending $6 million a year to pay for the 50 extra police officers who patrol Skid Row while budgeting just $5.7 million for homeless services.

By comparison, Dennison said, New York City has a “right to shelter” policy and invests about $200 million a year in housing and other services for the needy, resulting in a homeless population half that of Los Angeles.